Kaede is a Source, capable of powering a machine with her own energy. Working for the military, she is hiding the full extent of her power out of fear for herself as well as her countrymen. She is afraid of provoking a war if her abilities became known.

However, not everyone agrees with her actions, and Kaede faces uncertainty and turmoil. Mari, a war machine pilot, seems to be out for glory and action. Can Kaede trust her or not?

War looms and Kaede is torn. What can she do to change the tide of battle?